Final answer:
The symptoms of a full bladder during the 4th stage of labor include lower abdominal distention, discomfort, and diminished urine output, due to the pressure exerted on the bladder by the expanded uterus and fetus.
Step-by-step explanation:
The signs and symptoms of a full bladder that might occur in the 4th stage of labor are lower abdominal distention, discomfort, and diminished urine output. In the third trimester and during labor, the uterus expands rapidly, exerting pressure on the bladder and leading to frequent urination. The increased pressure from the fetus on returning veins may also cause circulatory problems and varicose veins, impacting urinary function. Renal colic, often manifesting as severe pain in the flank, lower abdomen, and groin, can indicate compromised urinary tract function but is more commonly due to kidney stones than labor. Cystitis, an infection of the bladder, can cause symptoms like dysuria, pyuria, and hematuria but does not directly relate to the full bladder associated with childbirth stages.